TPS3128E15DBVT Equivalent & Substitute Parts

Part Overview

The TPS3128E15DBVT is a single-channel power supply supervisor IC manufactured by Texas Instruments, designed for power-on reset and simple reset applications. This device monitors a 1.43V threshold voltage and provides an active-low open-drain output signal. The part is classified as Last Time Buy, indicating limited future availability. Identifying equivalent and substitute parts ensures design continuity and supply chain resilience for applications requiring supervisor functionality with identical electrical and mechanical specifications.

Substiute Parts

TPS3128E15DBVT

Texas InstrumentsIn Stock: 1331TPS3128E15DBVT Datasheet

Current PartRFQ

TPS3126E15DBVR

Texas InstrumentsIn Stock: 2156TPS3126E15DBVR Datasheet

Parametric EquivalentRFQ

TPS3126E15DBVT

Texas InstrumentsIn Stock: 1669TPS3126E15DBVT Datasheet

Parametric EquivalentRFQ

TPS3128E15DBVR

Texas InstrumentsIn Stock: 1061TPS3128E15DBVR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TPS3128E15DBVT is determined by strict equivalence across the following critical parameters:

• Voltage Threshold: 1.43V (single-channel monitoring)
• Output Configuration: Open Drain or Open Collector
• Reset Logic: Active Low
• Reset Timeout: 100ms Minimum
• Operating Temperature Range: -40°C ~ 85°C (TA)
• Package Type: SOT-23-5 (SC-74A, SOT-753)
• Mounting Type: Surface Mount
• Compliance: ROHS3 Compliant, REACH Unaffected

All substitute parts listed maintain identical electrical characteristics and mechanical compatibility. Differences in product status (Last Time Buy vs. Active) and base product number (TPS3128 vs. TPS3126) do not affect functional equivalence within the specified parameter set.

Parameter Comparison

Engineering Selection Recommendations

All four parts listed—TPS3128E15DBVT, TPS3126E15DBVR, TPS3126E15DBVT, and TPS3128E15DBVR—are functionally equivalent for applications requiring a 1.43V single-channel supervisor with active-low open-drain output and 100ms minimum reset timeout in SOT-23-5 packaging.

For new designs or long-term supply requirements, TPS3126E15DBVR and TPS3128E15DBVR are preferred due to Active product status, ensuring continued manufacturer support and availability. Both parts maintain full ROHS3 compliance and REACH unaffected status.

For existing designs currently using TPS3128E15DBVT, direct substitution with TPS3128E15DBVR provides identical electrical and mechanical performance with improved supply continuity. Alternatively, TPS3126E15DBVR offers equivalent functionality with higher current inventory levels.

Frequently Asked Questions (FAQ)

Q: Can TPS3126E15DBVR replace TPS3128E15DBVT in existing designs?

A: Yes. Both parts share identical electrical specifications: 1.43V threshold, active-low open-drain output, 100ms minimum reset timeout, and SOT-23-5 packaging. The base product number difference (TPS3126 vs. TPS3128) does not affect functional compatibility within the specified parameter set.

Q: What is the difference between the "T" and "R" suffix in the part numbers?

A: The suffix indicates packaging format. "T" denotes Tape & Reel packaging, while "R" also denotes Tape & Reel packaging. Both are surface-mount compatible and suitable for automated assembly.

Q: Why is TPS3128E15DBVT marked as Last Time Buy?

A: Last Time Buy status indicates the manufacturer has discontinued or will discontinue production. Substitute parts with Active status (TPS3126E15DBVR and TPS3128E15DBVR) ensure long-term design support and supply availability.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All four parts listed are ROHS3 Compliant and REACH Unaffected, meeting current environmental and regulatory requirements.

Q: Can these parts be used interchangeably in PCB layouts?

A: Yes. All parts use identical SOT-23-5 (SC-74A, SOT-753) packaging with surface-mount configuration, allowing direct PCB footprint compatibility without layout modifications.